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WA2MPX dual channel pre amp front view

Warm Audio WA-2MPX Tube Mic Preamp

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$1,599.00
$1,499.00
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Description

Warm Audio WA-2MPX Tube Preamp Overview

  Warm Audio WA-2MPX tube mic preamp front panel with VU meters

Classic Tape-Era Tone with Real Tube Depth

The WA-2MPX captures the essence of the classic 351-style tube electronics that shaped countless radio-ready recordings. Its tube-driven gain structure adds body and harmonic richness that feels natural on vocals, guitars, drums, and keyboards.

From subtle enhancement to bold coloration, this preamp lets you decide how much character you want to commit on the way in, making it a powerful creative tool during tracking.

 Warm Audio WA-2MPX dual-channel tube preamp controls and switches

Flexible Gain Structure for Modern Sessions

Warm Audio stayed true to the original circuit while adding features that make the WA-2MPX far more adaptable in today’s studios. The tape saturation switch lets you fine-tune harmonic density, while the classic tone switch adjusts mic input impedance for additional color or microphone optimization.

With up to 70dB of gain, or 90dB when High Gain is engaged, the WA-2MPX easily handles low-output microphones, including passive ribbons, even on quiet sources.

 Warm Audio WA-2MPX rear panel XLR and TRS connections

Built for Hybrid and Professional Workflows

Each channel includes mic, line, and instrument inputs, along with balanced XLR and TRS outputs for seamless integration into studio and live rigs. Highpass and lowpass filters help shape sources quickly, while polarity reverse and phantom power keep sessions moving smoothly.

The solid metal chassis, internal universal power supply, and hand-tested construction make the WA-2MPX a reliable front end for studio, mobile, and location recording.

Key Highlights

  • Dual-channel tube mic, line, and instrument preamp inspired by classic 351 circuitry
  • Up to 90dB of tube gain with High Gain mode engaged
  • Selectable tape saturation and classic tone impedance switch
  • Custom-wound large-core CineMag USA transformers
  • Highpass and lowpass filters for fast tone shaping
  • Handwired, hand assembled, and tested in Austin, Texas

If you’re building a premium front end, explore more options in our microphone preamps collection, 

Warm Audio WA-2MPX Specifications

Specification Details
Preamp Type Tube
Number of Channels 2
Phantom Power Yes
Polarity Switch Yes
EQ 80Hz highpass filter, 2kHz lowpass filter
Tubes 4 x 12AX7, 2 x 12AU7
Analog Inputs 2 x XLR, 2 x 1/4" TRS, 2 x 1/4" Hi-Z (front)
Analog Outputs 2 x XLR, 2 x 1/4"
Frequency Response 20Hz-20kHz
Rack Spaces 2U
Power Source Standard IEC AC cable
Height 3.5"
Width 19"
Manufacturer Part Number WA-2MPX

What’s in the Box

Included Items
Warm Audio WA-2MPX 2-channel tube preamp
IEC power cable
Shipping

Shipping & Returns

  • We deliver all US orders in 3–5 business days
  • Free cancellations
  • Returns accepted within 30 days (unused items)

Order Confirmation

Once your order is placed, you will receive an order confirmation email. This confirms that we have received your order and have pre-authorized your credit card for the purchase. After confirming availability with our suppliers, we will proceed accordingly:

  • If your item is available and ready to ship within 1–2 business days, we will process the charge and arrange for shipment.

  • If your item is on backorder or unavailable, the pre-authorization will be voided and you will be notified by email.

  • Please note: While most items ship out within 1–2 business days, total delivery time is typically 3–5 business days, depending on your location and carrier handling.

Order Shipment

If your item is in stock and your payment has been processed, your order will typically ship within 1–2 business days. Total delivery time is approximately 3–5 business days from the date of order. Once shipped, you will receive tracking information at the email address provided during checkout within 24 hours of dispatch.

If you have not received tracking information within 3–5 business days of placing your order, please contact us at support@proaudioreserve.com.

The Distributor-Direct Advantage

To ensure you receive the most recent hardware revisions and 100% factory-sealed units, Pro Audio Reserve utilizes a Distributor-Direct fulfillment model. Unlike big-box retailers that may ship "floor models" or gear that has been sitting in general-purpose warehouses, your equipment is pulled directly from the primary manufacturer hub, serialized, and dispatched. This process ensures the highest level of quality control for professional-grade recording equipment.

Shipping Policy

We currently offer free shipping within the United States only. If the checkout process on our website allows you to enter a shipping address and complete your order, your location is eligible to receive delivery.

Changing Shipping Address

If you need to change your shipping address after your order has been processed or shipped, we will do our best to accommodate the request. Please note that address changes may result in delivery delays. Any additional costs incurred due to address changes, including carrier fees or rerouting charges will be the responsibility of the customer. No exceptions.

Shipping Times

All shipping times provided are estimates and should not be considered guarantees. Most orders ship out within 1–2 business days from the time payment is processed. However, total delivery time is typically 3–5 business days, depending on your location, carrier performance, and supplier fulfillment timelines.

We work closely with our vendors to ensure timely deliveries, but please note that supply chain disruptions, high-demand periods, or weather events may occasionally cause delays beyond our control.

  • To avoid misunderstandings: The “shipping time” refers to the total time from order placement to final delivery, not just when the item leaves the warehouse.

  • Cancellations: If you choose to cancel your order because it has not arrived within the estimated delivery window, you may be responsible for applicable shipping charges, restocking fees, warehouse handling costs, and other related fees.

  • Chargebacks: Customers who initiate chargebacks due to shipping delays without contacting us first may be held legally responsible for losses. We strongly encourage open communication so we can resolve any delivery concerns directly and efficiently via our Atlanta-based support team.

Delivery Options

  • Threshold Shipping: Your item will be delivered to your front door, porch, garage, or a covered entryway.

 

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at ProAudioReserve.

  • Free Shipping USA wide. 
  • 30 Day Easy Returns. Not happy with your product, we'll take it back noquestions asked.
  • Great Service. We pride ourselves on the best service, anywhere.

Reviews

Customer Reviews

Be the first to write a review
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Description

Warm Audio WA-2MPX Tube Preamp Overview

  Warm Audio WA-2MPX tube mic preamp front panel with VU meters

Classic Tape-Era Tone with Real Tube Depth

The WA-2MPX captures the essence of the classic 351-style tube electronics that shaped countless radio-ready recordings. Its tube-driven gain structure adds body and harmonic richness that feels natural on vocals, guitars, drums, and keyboards.

From subtle enhancement to bold coloration, this preamp lets you decide how much character you want to commit on the way in, making it a powerful creative tool during tracking.

 Warm Audio WA-2MPX dual-channel tube preamp controls and switches

Flexible Gain Structure for Modern Sessions

Warm Audio stayed true to the original circuit while adding features that make the WA-2MPX far more adaptable in today’s studios. The tape saturation switch lets you fine-tune harmonic density, while the classic tone switch adjusts mic input impedance for additional color or microphone optimization.

With up to 70dB of gain, or 90dB when High Gain is engaged, the WA-2MPX easily handles low-output microphones, including passive ribbons, even on quiet sources.

 Warm Audio WA-2MPX rear panel XLR and TRS connections

Built for Hybrid and Professional Workflows

Each channel includes mic, line, and instrument inputs, along with balanced XLR and TRS outputs for seamless integration into studio and live rigs. Highpass and lowpass filters help shape sources quickly, while polarity reverse and phantom power keep sessions moving smoothly.

The solid metal chassis, internal universal power supply, and hand-tested construction make the WA-2MPX a reliable front end for studio, mobile, and location recording.

Key Highlights

  • Dual-channel tube mic, line, and instrument preamp inspired by classic 351 circuitry
  • Up to 90dB of tube gain with High Gain mode engaged
  • Selectable tape saturation and classic tone impedance switch
  • Custom-wound large-core CineMag USA transformers
  • Highpass and lowpass filters for fast tone shaping
  • Handwired, hand assembled, and tested in Austin, Texas

If you’re building a premium front end, explore more options in our microphone preamps collection, 

Warm Audio WA-2MPX Specifications

Specification Details
Preamp Type Tube
Number of Channels 2
Phantom Power Yes
Polarity Switch Yes
EQ 80Hz highpass filter, 2kHz lowpass filter
Tubes 4 x 12AX7, 2 x 12AU7
Analog Inputs 2 x XLR, 2 x 1/4" TRS, 2 x 1/4" Hi-Z (front)
Analog Outputs 2 x XLR, 2 x 1/4"
Frequency Response 20Hz-20kHz
Rack Spaces 2U
Power Source Standard IEC AC cable
Height 3.5"
Width 19"
Manufacturer Part Number WA-2MPX

What’s in the Box

Included Items
Warm Audio WA-2MPX 2-channel tube preamp
IEC power cable
Shipping

Shipping & Returns

  • We deliver all US orders in 3–5 business days
  • Free cancellations
  • Returns accepted within 30 days (unused items)

Order Confirmation

Once your order is placed, you will receive an order confirmation email. This confirms that we have received your order and have pre-authorized your credit card for the purchase. After confirming availability with our suppliers, we will proceed accordingly:

  • If your item is available and ready to ship within 1–2 business days, we will process the charge and arrange for shipment.

  • If your item is on backorder or unavailable, the pre-authorization will be voided and you will be notified by email.

  • Please note: While most items ship out within 1–2 business days, total delivery time is typically 3–5 business days, depending on your location and carrier handling.

Order Shipment

If your item is in stock and your payment has been processed, your order will typically ship within 1–2 business days. Total delivery time is approximately 3–5 business days from the date of order. Once shipped, you will receive tracking information at the email address provided during checkout within 24 hours of dispatch.

If you have not received tracking information within 3–5 business days of placing your order, please contact us at support@proaudioreserve.com.

The Distributor-Direct Advantage

To ensure you receive the most recent hardware revisions and 100% factory-sealed units, Pro Audio Reserve utilizes a Distributor-Direct fulfillment model. Unlike big-box retailers that may ship "floor models" or gear that has been sitting in general-purpose warehouses, your equipment is pulled directly from the primary manufacturer hub, serialized, and dispatched. This process ensures the highest level of quality control for professional-grade recording equipment.

Shipping Policy

We currently offer free shipping within the United States only. If the checkout process on our website allows you to enter a shipping address and complete your order, your location is eligible to receive delivery.

Changing Shipping Address

If you need to change your shipping address after your order has been processed or shipped, we will do our best to accommodate the request. Please note that address changes may result in delivery delays. Any additional costs incurred due to address changes, including carrier fees or rerouting charges will be the responsibility of the customer. No exceptions.

Shipping Times

All shipping times provided are estimates and should not be considered guarantees. Most orders ship out within 1–2 business days from the time payment is processed. However, total delivery time is typically 3–5 business days, depending on your location, carrier performance, and supplier fulfillment timelines.

We work closely with our vendors to ensure timely deliveries, but please note that supply chain disruptions, high-demand periods, or weather events may occasionally cause delays beyond our control.

  • To avoid misunderstandings: The “shipping time” refers to the total time from order placement to final delivery, not just when the item leaves the warehouse.

  • Cancellations: If you choose to cancel your order because it has not arrived within the estimated delivery window, you may be responsible for applicable shipping charges, restocking fees, warehouse handling costs, and other related fees.

  • Chargebacks: Customers who initiate chargebacks due to shipping delays without contacting us first may be held legally responsible for losses. We strongly encourage open communication so we can resolve any delivery concerns directly and efficiently via our Atlanta-based support team.

Delivery Options

  • Threshold Shipping: Your item will be delivered to your front door, porch, garage, or a covered entryway.

 

Why Buy From Us

We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at ProAudioReserve.

  • Free Shipping USA wide. 
  • 30 Day Easy Returns. Not happy with your product, we'll take it back noquestions asked.
  • Great Service. We pride ourselves on the best service, anywhere.

Reviews

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)